维修手册
专案名称：
Axpert VM III-5000/VM III-3000
专案编号：
S1711171
修订版次：
00
PAGE
V-RDP-004-73 A
2.2.1. Not working at all/ No display
Description
The inverter couldn’t startup completely.
Possible reason
1. SPS module damaged.
How to check
1. Firstly, please measure the resistor between BAT+ and BAT-. If it is
not shorted, only connect the inverter with battery, and press “ON”
button, could the inverter startup? If not, please check the fan.
2. If the LCD couldn’t light up and fan doesn’t work, please disconnect all
the wires and open the top cover, and then take the main board outside
by following part 4.
3. Check the main board by following “3.5 and 3.6”
How to solve
Repair the main or replace it directly.
2.2.2. 09 fault
Description
Bus soft start fails.
Possible reason
DC-DC module was damaged or BUS soft start module was damaged.
How to check
1. Check the main board by following“3.6; 3.7”;
2. Check the main board by following“3.1; 3.2; 3.3; 3.4”.
How to solve
Repair the main board or replace it directly.
2.2.3.
Warning
Description
Battery couldn’t be detected.
Possible reason
Wire connection or fuse was burnt.
How to check
1. Check the wire connection, the priority of the battery cable;
2. Check the main board by following “3.1”.
How to solve
Repair the main board or replace it directly.
1.7 Test step
After replacing all defected components, testing steps can be used to confirm the repair
result and the reliability of the Inverter.
Set up the testing system as below:
